I've been working on a new (to me) approach for a t-grain emulsion, based on US Patent 4434226 from 1984. I've gone through and taken one of the examples in the patent, and taken the amounts used in the formulation and tried to fill in some of the things that it left out of the example that are mentioned in the other examples... The main thing that this patent does that most of the other film speed formulas we've seen or discussed here is that it uses Thiocyante ion as the ripening agent as opposed to ammonia. (Note that thiocyanate is not nearly as toxic as regular cyanide, it's more like bromide or iodide so not too much concern in using it.)
So the last couple of days has been working out volumes, concentrations, and times. I also calibrated my peristaltic pump last night with some new tubing I bought this summer. I made a silver electrode based on a design the Photo Engineer/PE and I have been working on, and I plated it with silver bromide a couple days ago. I'll try testing it this morning and see how it performs. If that goes well, I think I'll mix some reagents up and then make a run!
It's more technical than is needed for an basic emulsion, but that's half the fun!